Published 6:25 a.m. | Updated 5:20 p.m.

Editor's Note: The Spring Fire started June 27 and has continued to grow. This story covers developments and updates that occurred June 28. You can find the latest on the fire here. Our original post continues below.
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The Spring Fire in southern Colorado has burned an estimated 3,723 acres and forced hundreds of evacuations. There is no containment at this time and a Type 2 Team is expected to take over the fight Thursday.

The fire is burning about 160 miles south of Denver in the Sangre de Cristo Mountains.

Authorities said Thursday morning that some structures were lost to flames, but provided no immediate details. The Costilla County Sheriff's Office said it was assessing the damage and would update evacuated residents.

The evacuation notice was sent Wednesday, the day the fire was reported, to nearly 400 phone numbers in the Forbes Park area east of Fort Garland. About 350 primary and vacation homes in the Sangre de Cristo Mountains were evacuated. 

Hot, dry and windy weather has raised the fire danger across much of Colorado as well as Utah and parts of Arizona and Nevada.